Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Superphylum Articulata Cuvier see Supraphylum Articulata Cuvier
           Phylum Arthropoda Siebold, 1848 - arthropods
             Subphylum Chelicerata Heymons, 1901
               Class Arachnida Lamarck, 1801
                 Order Acari Leach, 1817 - mites, ticks and chiggers see Subclass Acari Leach, 1817
                   Suborder Trombidiformes Reuter, 1909 see Order Trombidiformes Reuter, 1909
                     Genus Pyemotes Amerling, 1861
                     01 Family Eupodidae Koch, 1842
                     02 Family Tetranychidae Donnadieu, 1875
                     03 Family Cheyletidae Leach, 1815
                     04 Family Demodicidae Nicolet, 1855, nom. illeg. see Family Demodecidae Nicolet, 1855
                     05 Family Bdellidae Dugès, 1834
                     06 Family Halacaridae Murray, 1877
                     07 Family Limnohalacaridae Viets, 1927 see Subfamily Limnohalacarinae Viets, 1927
                     08 Family Trombidiidae Leach, 1815
                     09 Family Erythraeidae Robineau-Desvoidy, 1828
                     10 Family Hydrachnidae Leach, 1815
                     11 Family Limnocharidae Grube, 1859
                     12 Family Eylaidae Leach, 1815
                     13 Family Thyasidae Viets, 1926 see Subfamily Thyadinae Viets, 1926, nom. illeg.
                     14 Family Hydryphantidae Piersig, 1896
                     15 Family Sperchonidae Thor, 1900 see Family Sperchontidae Thor, 1900
                     16 Family Pontarachnidae Koenike, 1910
                     17 Family Unionicolidae Oudemans, 1909
                     18 Family Arrenuridae Thor, 1900